IAC Shares Sing:
Breaking Up Is
Easy, Good to Do

Investors and analysts applauded the planned breakup of IAC/InterActiveCorp, a move to simplify the e-commerce conglomerate built by Barry Diller that boosted the company's share price.

As expected, IAC/InterActiveCorp announced that it will spin off its travel businesses to shareholders to form a separately traded company called Expedia. Together the businesses account for about 30% of IAC's current revenue and about 55% of its...